Unable to get started

[Marcus Schmidke]

Hello all.

I cannot wait to get started and since I already own some arduinos and some radio modules, I tried to get the "door sensor" example running. But unfortunately it doesn't work at all.

I've searched the forum, but even more unfortunately, all matching threads I found end before there was a solution ...

This is what I did:

• I connected two Arduinos and two radios and triple checked the wires
• I uploaded the "serial gateway" example to one of them, the "door sensor" example to the other
• I started both and looked at the serial monitors

On the sensor node I have the following output:
Sensor Node:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
sensor started, id 255
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=ok:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:
req node id
send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,st=fail:

Note there is one "st=ok" and lots of "st=fail".

I've read about "assigning id not working without controller" and so on so I do not wonder why assigning an ID does not work. I will do further investigations in that direction (assigning a static id and so on).

But my question is: why are there such a lot of failed transmissions and only a few are working?

I will order some capacitors and try again, but since I've powered the Arduinos by a battery driven notebook I did not expect that much noise on the power line, or am I wrong?

Marcus.

[dzairo]

ehm.. on first set node ID manually ..
sensor_node.begin(NULL,25);
with this set node ID manually to 25 ..

try it ..

regards.

[hek]

Adding capacitors will do wonders to your failed ack:s.

[dzairo]

... ehm .. I also have this idea .. but can't find example photo from this forum..

[kalle]

http://www.mysensors.org/build/connect_radio#connecting-a-decoupling-capacitor

[raditv]

I think node ID is given by controller on serial gateway.

[Marcus Schmidke]

Oha, you are right.

The capacitor was the solution. I never thought that a battery-powered notebook could be a bad power source. Sorry for asking before having tried it ...

Thank you!!

Marcus.